in1 -irii Fm F-wi Iii nfl nfl nfl I Offering major improvements performance both RC CL ingenious tank vanquishes limitations weve live David Gierke HOW OFTEN have competition people frustrated engines hope lessly flooded just wrong moment As well aware person careful backflow condition through pressure line conventional tank will flood engines crankcase What about RC pattern enthusiast points ship prolonged vertical dive have engine flame out toward bot tom maneuver improvements engine tech nology its related systems carbure tors glow-plugs fuels etc fuel tank looms problem child power development family solution hand promises end prob lems have tolerate new tank promises have following advantages 1 Fuel will foam system 2 Fuel pickup critical respect location tank 3 Tank non-critical vibration mounting 4 Tank will empty fuel hav ing tendency running lean toward end will note pliable rubber bladder has sealed conventional plastic other airtight container tank Pressure engine muffler timed untimed crankcase pressure admitted between outer shell bladder solid fuel pickup its multiple hole arrangement ensure fuel flow dur ing condition bladder collapse randomly positioned along length inner bag bladder system needs pickup tube plus air bleed vent bag through air bleed vent Filling accomplished through pickup feed line After filling air bleed vent 26 Model Aviation II n F IF Heres Works diagram author energy technology laboratory installing rubber bladder test cell interest old-timers ins TaCT mat uave iinas ins old pressure system used Jim Walkerfuel bladder squeezed between boards rubber bands regulatoris related OVERFLOW TUBE CAPPED DURING RUNNING PRESSURE FITTING 7 BALLOON INNER BLADDER capped off bag filled its un stretched capacity sytem works dif ferently pen bladder baby pacifier external pressure forces fuel airless bladder through fuel lines metering device needle valve engines carburetor tank oper ates tried proven concept pressure differential higher pres sure outside bladder bag forces fuel toward lower pressure created engines crankcase Since no air bladder can no foaming bladder collapses uniformly because equal pres sure around itself therefore pickup tube positioning little importance NASA has used concept years its posi tive expulsion fuel systems designed use space rocket-engine fuel systems etc As spacecraft fuel systems Super Tank effected external forces such gravity inertia etc external forces continually affect fuel conventional tank sloshing about madly Fixed pickups tanks tend remain submerged within fuel Clunk-type tanks have mechanical kinetic problems related external forces should obvious can no crankcase flooding through pressure lines backfiow system Beautiful throttle operation can maintained use low pressure muffler pressure about 15 PSI tank feature difficult get used concerns tanks ability emp ty itself almost last drop Toward end run bladder looks like flat prune its wrinkles Never again will finish flight tank containing much 10% its fuel re maining Super Tank operates POSITIVE STATIONARY PLASTIC R/G FUEL TANK TYPE / MULTI-HOLE PICKUP TUBE August1977 27 test tank note feed line crankcase pressure line third tube vent line used during fueling capped off before starting engine tuel bladder being Installea coruvemmona uu.van Iuni ru xperimentation arrangement suitable Late news Sullivan will make tank proper needle setting last second whereby merely looses rpms stops No longer will engine subjected wearing effects leaning out toward end flight conventional tanks Too Good True super ideas usually drawbacks concept no exception tank un beatable aspect its operation hangup lies material used bladder Most materials such natu ral rubber deteriorate under influence fuels time Low percentages nitromethane better racing fuels bladder longevity scale Neverthe less know what happens surgical tubing fuel line after period time deteriorates Neoprene holds up well lacks soft pliability natural rubber have using heavy walled balloons success provided replaced often method seems prolong life such bladders squirt some glycerine system after use course bladder must flushed before using fuel alcohol Balloons generally unacceptable because contour inside outer tank shell limits systems overall capacity tank does require stock vibration mounting amount foam other anti-vibration materials used dependent upon limits physical durability outer shell Remember can no foaming air being present system Pulse jet-powered models very sus ceptible air bubbles fuel such fuels air bubble line will cause flame out problem es pecially critical bumpy takeoff recent use combustion chamber pres sure force feed high percentages nitro methane fuel engine enables us use positive expulsion bladder princi ple Sullivan Products Pylan Brand tanks actively involved research toward production long-lived positiveexpulsion fuel tank Matty Sullivan plans market 12-oz version first other sizes follow After experi ments bladder materials Sullivan ap parently settled upon neoprene plastic other innovations im mediate horizon Super Tank incorporation fuelpressure regulator pump-type carbure tors located right tank seems ironic late great Jim Walker solution fuel deliv ery problem 25 years ago Jim pressurized balloon-type tank squeezing technique using rubberbands pressure regulator compensated ever-present fluctuations system Walker way ahead time engines relatively low quality todays standards didnt need Walker fuel delivery system has taken Jims solution about rediscovered benefit 28 Model Aviation Sullivan Pylon tank sealed normal mannor expanding rubber cork end plastic neck Complete air tightness must Flight version Super Tank banded test cell static performance check Note pressure line Pressure fitting threaded plastic tank because inadequate stock corners Overall engine performance can improved several percent due improved fuel system perform ance Fuel good last drop HP 40 awaits hp test authors engine dynamometer
Edition: Model Aviation - 1977/08
Page Numbers: 26, 27, 28
Edition: Model Aviation - 1977/08
Page Numbers: 26, 27, 28
in1 -irii Fm F-wi Iii nfl nfl nfl I Offering major improvements performance both RC CL ingenious tank vanquishes limitations weve live David Gierke HOW OFTEN have competition people frustrated engines hope lessly flooded just wrong moment As well aware person careful backflow condition through pressure line conventional tank will flood engines crankcase What about RC pattern enthusiast points ship prolonged vertical dive have engine flame out toward bot tom maneuver improvements engine tech nology its related systems carbure tors glow-plugs fuels etc fuel tank looms problem child power development family solution hand promises end prob lems have tolerate new tank promises have following advantages 1 Fuel will foam system 2 Fuel pickup critical respect location tank 3 Tank non-critical vibration mounting 4 Tank will empty fuel hav ing tendency running lean toward end will note pliable rubber bladder has sealed conventional plastic other airtight container tank Pressure engine muffler timed untimed crankcase pressure admitted between outer shell bladder solid fuel pickup its multiple hole arrangement ensure fuel flow dur ing condition bladder collapse randomly positioned along length inner bag bladder system needs pickup tube plus air bleed vent bag through air bleed vent Filling accomplished through pickup feed line After filling air bleed vent 26 Model Aviation II n F IF Heres Works diagram author energy technology laboratory installing rubber bladder test cell interest old-timers ins TaCT mat uave iinas ins old pressure system used Jim Walkerfuel bladder squeezed between boards rubber bands regulatoris related OVERFLOW TUBE CAPPED DURING RUNNING PRESSURE FITTING 7 BALLOON INNER BLADDER capped off bag filled its un stretched capacity sytem works dif ferently pen bladder baby pacifier external pressure forces fuel airless bladder through fuel lines metering device needle valve engines carburetor tank oper ates tried proven concept pressure differential higher pres sure outside bladder bag forces fuel toward lower pressure created engines crankcase Since no air bladder can no foaming bladder collapses uniformly because equal pres sure around itself therefore pickup tube positioning little importance NASA has used concept years its posi tive expulsion fuel systems designed use space rocket-engine fuel systems etc As spacecraft fuel systems Super Tank effected external forces such gravity inertia etc external forces continually affect fuel conventional tank sloshing about madly Fixed pickups tanks tend remain submerged within fuel Clunk-type tanks have mechanical kinetic problems related external forces should obvious can no crankcase flooding through pressure lines backfiow system Beautiful throttle operation can maintained use low pressure muffler pressure about 15 PSI tank feature difficult get used concerns tanks ability emp ty itself almost last drop Toward end run bladder looks like flat prune its wrinkles Never again will finish flight tank containing much 10% its fuel re maining Super Tank operates POSITIVE STATIONARY PLASTIC R/G FUEL TANK TYPE / MULTI-HOLE PICKUP TUBE August1977 27 test tank note feed line crankcase pressure line third tube vent line used during fueling capped off before starting engine tuel bladder being Installea coruvemmona uu.van Iuni ru xperimentation arrangement suitable Late news Sullivan will make tank proper needle setting last second whereby merely looses rpms stops No longer will engine subjected wearing effects leaning out toward end flight conventional tanks Too Good True super ideas usually drawbacks concept no exception tank un beatable aspect its operation hangup lies material used bladder Most materials such natu ral rubber deteriorate under influence fuels time Low percentages nitromethane better racing fuels bladder longevity scale Neverthe less know what happens surgical tubing fuel line after period time deteriorates Neoprene holds up well lacks soft pliability natural rubber have using heavy walled balloons success provided replaced often method seems prolong life such bladders squirt some glycerine system after use course bladder must flushed before using fuel alcohol Balloons generally unacceptable because contour inside outer tank shell limits systems overall capacity tank does require stock vibration mounting amount foam other anti-vibration materials used dependent upon limits physical durability outer shell Remember can no foaming air being present system Pulse jet-powered models very sus ceptible air bubbles fuel such fuels air bubble line will cause flame out problem es pecially critical bumpy takeoff recent use combustion chamber pres sure force feed high percentages nitro methane fuel engine enables us use positive expulsion bladder princi ple Sullivan Products Pylan Brand tanks actively involved research toward production long-lived positiveexpulsion fuel tank Matty Sullivan plans market 12-oz version first other sizes follow After experi ments bladder materials Sullivan ap parently settled upon neoprene plastic other innovations im mediate horizon Super Tank incorporation fuelpressure regulator pump-type carbure tors located right tank seems ironic late great Jim Walker solution fuel deliv ery problem 25 years ago Jim pressurized balloon-type tank squeezing technique using rubberbands pressure regulator compensated ever-present fluctuations system Walker way ahead time engines relatively low quality todays standards didnt need Walker fuel delivery system has taken Jims solution about rediscovered benefit 28 Model Aviation Sullivan Pylon tank sealed normal mannor expanding rubber cork end plastic neck Complete air tightness must Flight version Super Tank banded test cell static performance check Note pressure line Pressure fitting threaded plastic tank because inadequate stock corners Overall engine performance can improved several percent due improved fuel system perform ance Fuel good last drop HP 40 awaits hp test authors engine dynamometer
Edition: Model Aviation - 1977/08
Page Numbers: 26, 27, 28
in1 -irii Fm F-wi Iii nfl nfl nfl I Offering major improvements performance both RC CL ingenious tank vanquishes limitations weve live David Gierke HOW OFTEN have competition people frustrated engines hope lessly flooded just wrong moment As well aware person careful backflow condition through pressure line conventional tank will flood engines crankcase What about RC pattern enthusiast points ship prolonged vertical dive have engine flame out toward bot tom maneuver improvements engine tech nology its related systems carbure tors glow-plugs fuels etc fuel tank looms problem child power development family solution hand promises end prob lems have tolerate new tank promises have following advantages 1 Fuel will foam system 2 Fuel pickup critical respect location tank 3 Tank non-critical vibration mounting 4 Tank will empty fuel hav ing tendency running lean toward end will note pliable rubber bladder has sealed conventional plastic other airtight container tank Pressure engine muffler timed untimed crankcase pressure admitted between outer shell bladder solid fuel pickup its multiple hole arrangement ensure fuel flow dur ing condition bladder collapse randomly positioned along length inner bag bladder system needs pickup tube plus air bleed vent bag through air bleed vent Filling accomplished through pickup feed line After filling air bleed vent 26 Model Aviation II n F IF Heres Works diagram author energy technology laboratory installing rubber bladder test cell interest old-timers ins TaCT mat uave iinas ins old pressure system used Jim Walkerfuel bladder squeezed between boards rubber bands regulatoris related OVERFLOW TUBE CAPPED DURING RUNNING PRESSURE FITTING 7 BALLOON INNER BLADDER capped off bag filled its un stretched capacity sytem works dif ferently pen bladder baby pacifier external pressure forces fuel airless bladder through fuel lines metering device needle valve engines carburetor tank oper ates tried proven concept pressure differential higher pres sure outside bladder bag forces fuel toward lower pressure created engines crankcase Since no air bladder can no foaming bladder collapses uniformly because equal pres sure around itself therefore pickup tube positioning little importance NASA has used concept years its posi tive expulsion fuel systems designed use space rocket-engine fuel systems etc As spacecraft fuel systems Super Tank effected external forces such gravity inertia etc external forces continually affect fuel conventional tank sloshing about madly Fixed pickups tanks tend remain submerged within fuel Clunk-type tanks have mechanical kinetic problems related external forces should obvious can no crankcase flooding through pressure lines backfiow system Beautiful throttle operation can maintained use low pressure muffler pressure about 15 PSI tank feature difficult get used concerns tanks ability emp ty itself almost last drop Toward end run bladder looks like flat prune its wrinkles Never again will finish flight tank containing much 10% its fuel re maining Super Tank operates POSITIVE STATIONARY PLASTIC R/G FUEL TANK TYPE / MULTI-HOLE PICKUP TUBE August1977 27 test tank note feed line crankcase pressure line third tube vent line used during fueling capped off before starting engine tuel bladder being Installea coruvemmona uu.van Iuni ru xperimentation arrangement suitable Late news Sullivan will make tank proper needle setting last second whereby merely looses rpms stops No longer will engine subjected wearing effects leaning out toward end flight conventional tanks Too Good True super ideas usually drawbacks concept no exception tank un beatable aspect its operation hangup lies material used bladder Most materials such natu ral rubber deteriorate under influence fuels time Low percentages nitromethane better racing fuels bladder longevity scale Neverthe less know what happens surgical tubing fuel line after period time deteriorates Neoprene holds up well lacks soft pliability natural rubber have using heavy walled balloons success provided replaced often method seems prolong life such bladders squirt some glycerine system after use course bladder must flushed before using fuel alcohol Balloons generally unacceptable because contour inside outer tank shell limits systems overall capacity tank does require stock vibration mounting amount foam other anti-vibration materials used dependent upon limits physical durability outer shell Remember can no foaming air being present system Pulse jet-powered models very sus ceptible air bubbles fuel such fuels air bubble line will cause flame out problem es pecially critical bumpy takeoff recent use combustion chamber pres sure force feed high percentages nitro methane fuel engine enables us use positive expulsion bladder princi ple Sullivan Products Pylan Brand tanks actively involved research toward production long-lived positiveexpulsion fuel tank Matty Sullivan plans market 12-oz version first other sizes follow After experi ments bladder materials Sullivan ap parently settled upon neoprene plastic other innovations im mediate horizon Super Tank incorporation fuelpressure regulator pump-type carbure tors located right tank seems ironic late great Jim Walker solution fuel deliv ery problem 25 years ago Jim pressurized balloon-type tank squeezing technique using rubberbands pressure regulator compensated ever-present fluctuations system Walker way ahead time engines relatively low quality todays standards didnt need Walker fuel delivery system has taken Jims solution about rediscovered benefit 28 Model Aviation Sullivan Pylon tank sealed normal mannor expanding rubber cork end plastic neck Complete air tightness must Flight version Super Tank banded test cell static performance check Note pressure line Pressure fitting threaded plastic tank because inadequate stock corners Overall engine performance can improved several percent due improved fuel system perform ance Fuel good last drop HP 40 awaits hp test authors engine dynamometer
